136 Journal New York Entomological Society. [Voi. iv. 



submedian nervure to near the apex ; a small black mark in the cell. Secondaries 

 white. Expanse, 36 mm. 



Habitat: Sao Paulo, S. E. Brazil. 



Idalus citrina Druce is congeneric with this species. 



Thalesa, gen. nov. 



^ . Antennoe pectinated. Primaries broad, produced along the inner margin 

 apex acute; inner angle rounded. Veins 7, 8, 9 stalked. Secondaries as broad as 

 long; rounded at the apex and inner angle. Veins 5 and 8 absent; discocellular 

 open in the <J , forming an angle inwardly in the 9 • Vein 7 widely curved above 

 vein 6. Veins 3 and 4 from lower angle of cell. 



Allied to Idalus and Eupseiidosoma. Type, Thalesa (^Halisidofa) 

 seruba H. S. In the 9 the wings are long and narrow as in Halisidota. 

 Thalesa seruba is usually confounded with Halisidota niveigutta'SNaWi. 

 and the females can only be distinguished by the neuration. 



Symphlebia aryllis, sp. nov. 



Body orange yellow. Primaries bright yellow; the outer half of the veins 

 brown ; the subcostal vein to the end of the cell black, broadly bordered above with 

 creamy yellow, containing a long black streak ; a basal creamy yellow space above 

 the submedian vein containing a short fine black streak. Secondaries testaceous 

 Underneath testaceous. Expanse, 64 mm. 



Habitat : Aroa, Venezuela. 



This species is almost identical with Lophocampa nervosa Feld. 

 (Raise Novara, T. loi, Fig. 6.) in its markings, but the neuration is dif- 

 ferent. 



Castrica, gen. nov. 



Antennje finely pectinated. Primaries long and broad, the outer margin 

 slightly produced, between veins 5 and 6; the neuration as in Symphlebia, Felder. 

 Secondaries in the ^ somewhat quadrate with the angles rounded. Vein 2 from 

 'ower angle of cell in the $ , before the angle in the J ; veins 3 and 4 stalked ; vein 

 5 absent ; vein 6 usually absent; sometimes present in the 9 as a short branch of 

 vein 7. Veins 7 and 8 from upper angle of cell in the ^ , slightly stalked in the 9 ; 

 a costal spur in the ^ . 



Castrica oweni, sp. nov. 



Body yellow. Wings yellow heavily shaded with smoky gray through the cell 

 towards the apex and submarginally ; a clearer spot in the cell followed by a dark 

 spot. Secondaries pale yellow. Expanse, ^ 41 mm., 9 47 '^ii"'''- 



Habitat: A^enezuela, Costa Rica. Named after Prof. E. T. Owen. 



Prumala, gen. nov. 



9 . Antennce finely pectinated. Primaries large and broad. Veins 4 and 5 from 

 lower angle of cell; 6 from upper angle; 7-10 stalked. Secondaries broad, oval ; 

 veins 3 and 4 from lower angle of cell ; vein 5 absent ; 6, 7, 8, from angle of upper cell_ 



